公开(公告)号：US07406042B1

公开(公告)日：2008-07-29

申请号：US10290973

申请日：2002-11-07

申请人： Avadhani Shridhar ,  Behrooz Rezvani ,  Sushil Agarwal ,  Alfred Mui ,  Masoud Eskandari

发明人： Avadhani Shridhar ,  Behrooz Rezvani ,  Sushil Agarwal ,  Alfred Mui ,  Masoud Eskandari

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04J1/00

CPC分类号： H04L43/0852 ,  H04L12/2856 ,  H04L12/2885 ,  H04L12/2898 ,  H04L41/0896 ,  H04L41/5003 ,  H04L41/5025 ,  H04L41/5067

摘要： A bundler, un-bundler and sequencer for use in controlling and driving opposing sets of logical or physical modems to drive multiple-subscriber lines with multiple communication channels. The sequencer determines subscriber requirements such as maximum and minimum bandwidth and quality of service. The sequencer also determines bandwidth availability and status of multiple subscriber lines from which a bundle may be formed. The bundler couple to the sequencer and implement header or headerless insertion of multiple channels in round robin sequence into the X-DSL frames at data rates which correspond with subscriber requirements. The un-bundler reverses the process of the bundler and passes the appropriate packet data onto the corresponding network.

摘要翻译： 捆绑器，非捆绑器和定序器，用于控制和驱动相对的逻辑或物理调制解调器组，以驱动具有多个通信信道的多用户线路。 定序器确定用户需求，如最大和最小带宽以及服务质量。 定序器还确定可以形成束的多个用户线的带宽可用性和状态。 捆绑器耦合到定序器，并以符合用户要求的数据速率将轮询序列中的多个信道的头部或无头插入多个信道插入到X-DSL帧中。 解包器反转捆绑器的过程，并将适当的分组数据传递到相应的网络上。

公开(公告)号：US06842429B1

公开(公告)日：2005-01-11

申请号：US09776066

申请日：2001-02-02

申请人： Avadhani Shridhar ,  T. R. Ramesh ,  Raminder S. Bajwa ,  Masoud Eskandari ,  Firooz Massoudi ,  Omprakash S. Sarmaru ,  Behrooz Rezvani

发明人： Avadhani Shridhar ,  T. R. Ramesh ,  Raminder S. Bajwa ,  Masoud Eskandari ,  Firooz Massoudi ,  Omprakash S. Sarmaru ,  Behrooz Rezvani

IPC分类号： H04L12/26 ,  H04L12/66

CPC分类号： H04L12/66

摘要： The current invention provides a digital signal processor which supports multiple X-DSL protocols and a multiplicity of channels on a single chip. Each channel is packetized and each packet includes control information for controlling the performance of the components/modules on the transmit and receive path. Further flexibility is derived from an architecture which incorporates discrete and shared modules on the transmit path and the receive path. The transmit path and receive path modules are collectively controlled by control information in selected ones of the packets and operate on each channel's packets at an appropriate rate, and protocol for the channel. A digital signal processor (DSP) is disclosed which incorporates these features. The DSP exhibits a favorable form factor, and flexibility as to protocols and line codes, and numbers of channels supported.

摘要翻译： 本发明提供了在单个芯片上支持多个X-DSL协议和多个信道的数字信号处理器。 每个信道被分组化，并且每个分组包括用于控制发送和接收路径上的组件/模块的性能的控制信息。 来自在发送路径和接收路径上包含离散和共享模块的架构的进一步的灵活性。 发送路径和接收路径模块由选择的分组中的控制信息共同控制，并以适当的速率对每个信道的分组进行操作，以及针对该信道的协议。 公开了一种包含这些特征的数字信号处理器（DSP）。 DSP具有良好的外形尺寸，对协议和线路代码的灵活性以及支持的通道数量。

公开(公告)号：US06940807B1

公开(公告)日：2005-09-06

申请号：US09699193

申请日：2000-10-26

申请人： Behrooz Rezvani ,  Avadhani Shridhar ,  Raminder S. Bajwa ,  Tiruvur R. Ramesh ,  Masoud Eskandari ,  Firooz Massoudi ,  Sam Heidari ,  Omprakash S. Sarmaru ,  Sridhar Begur

发明人： Behrooz Rezvani ,  Avadhani Shridhar ,  Raminder S. Bajwa ,  Tiruvur R. Ramesh ,  Masoud Eskandari ,  Firooz Massoudi ,  Sam Heidari ,  Omprakash S. Sarmaru ,  Sridhar Begur

IPC分类号： H04J11/00

CPC分类号： G06F17/142 ,  H04L27/2628 ,  H04L27/265

摘要： The current invention provides a DSP which accommodates multiple current X-DSL protocols and is further configurable to support future protocols. The DSP is implemented with shared and dedicated hardware components on both the transmit and receive paths. The DSP implements both the discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) portions across a wide range of sample sizes and X-DSL protocols. Multiple channels, each with varying ones of the X-DSL protocols can be handled in the same session. The DSP offers the speed associated with hardware implementation of the transforms and the flexibility of a software only implementation. Traffic flow is regulated in the chip using a packet based schema in which each packet is associated with a specific channel of upstream and downstream data. Header and control information in each packet is used to govern the processing of each packet as it moves along either the transmit path or receive path. The DSP of the current invention may advantageously be utilized in fields other than communications, such as: medical and other imaging, seismic analysis, radar and other military applications, pattern recognition, signal processing etc. The present invention provides a signal processing architecture that supports scalability of CO/DLC/ONU resources, and allows a significantly more flexible hardware response to the evolving X-DSL standards without over committing of hardware resources. As standards evolve hardware may be reconfigured to support the new standards.

摘要翻译： 本发明提供一种DSP，其容纳多个当前的X-DSL协议，并且可进一步配置以支持未来的协议。 DSP在传输和接收路径上都具有共享和专用硬件组件。 DSP在宽范围的采样大小和X-DSL协议上实现离散傅立叶变换（DFT）和离散傅立叶逆变换（IDFT）部分。 每个具有不同的X-DSL协议的多个信道可以在同一个会话中处理。 DSP提供与转换的硬件实现相关的速度和仅用于软件的实现的灵活性。 使用基于分组的模式在芯片中调整流量流，其中每个分组与上游和下游数据的特定信道相关联。 每个数据包中的报头和控制信息用于控制每个数据包沿着发送路径或接收路径移动时的处理。 本发明的DSP可有利地用于通信以外的领域，例如：医疗和其他成像，地震分析，雷达和其他军事应用，模式识别，信号处理等。本发明提供一种信号处理架构，其支持 CO / DLC / ONU资源的可扩展性，并且允许对演进的X-DSL标准的显着更灵活的硬件响应，而不必超过硬件资源。 随着标准的发展，硬件可能被重新配置以支持新的标准。

公开(公告)号：US07028063B1

公开(公告)日：2006-04-11

申请号：US09698824

申请日：2000-10-26

申请人： Omprakash S. Sarmaru ,  Raminder S. Bajwa ,  Sridhar Begur ,  Avadhani Shridhar ,  Sam Heid Ari ,  Behrooz Rezvani

发明人： Omprakash S. Sarmaru ,  Raminder S. Bajwa ,  Sridhar Begur ,  Avadhani Shridhar ,  Sam Heid Ari ,  Behrooz Rezvani

IPC分类号： F06F17/14

CPC分类号： G06F17/141 ,  H04L27/2628 ,  H04L27/265

摘要： A Fourier transform processor utilizing discrete circuits each of which is configurable for processing a wide range of sample sizes. A single pipeline supports multiplexed bi-directional transformations between for example the time and frequency domains. In an embodiment of the invention the Fourier Transform processor may be implemented as part of a digital signal processor (DSP). In this embodiment the DSP may implement both the discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) across a wide range of sample sizes and X-DSL protocols. Multiple channels, each with varying ones of the X-DSL protocols can be handled in the same session.

摘要翻译： 利用离散电路的傅里叶变换处理器，每个离散电路可配置用于处理各种样本大小的范围。 单个流水线支持例如时域和频域之间的复用双向变换。 在本发明的实施例中，傅里叶变换处理器可以被实现为数字信号处理器（DSP）的一部分。 在该实施例中，DSP可以在宽范围的样本大小和X-DSL协议上实现离散傅里叶变换（DFT）和离散傅里叶逆变换（IDFT）两者。 每个具有不同的X-DSL协议的多个信道可以在同一个会话中处理。

公开(公告)号：US07315571B1

公开(公告)日：2008-01-01

申请号：US09837914

申请日：2001-04-18

申请人： Sam Heidari ,  Behrooz Rezvani ,  Raminder S. Bajwa ,  Jacky Chow ,  Avadhani Shridhar ,  Dale Smith ,  John Gevargiz ,  Saman Behtash

发明人： Sam Heidari ,  Behrooz Rezvani ,  Raminder S. Bajwa ,  Jacky Chow ,  Avadhani Shridhar ,  Dale Smith ,  John Gevargiz ,  Saman Behtash

IPC分类号： H04B1/38

CPC分类号： H04L27/2628 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0064 ,  H04L27/0002 ,  H04L27/265 ,  H04M11/062

摘要： A transceiver for communicating a multi-tone modulated communication channel on a subscriber line. The transceiver includes: a digital signal processor (DSP) with a Fourier transform module and an analog front end (AFE). The DSP determines an available range of frequencies on the subscriber line and expands or contracts the tone spacing of each of a fixed number “N” of tones accordingly by decreasing or increasing the processing interval associated with the Fourier transform of each tone set. The AFE performs digital-to-analog conversion of the multi-tone modulated communication channel at rates compatible with the processing interval of the Fourier transform module; whereby the range of frequencies spanned by the modulated tones on the subscriber line conforms to the available of frequencies on the subscriber line.

摘要翻译： 用于在用户线路上传送多音调调制通信信道的收发器。 收发器包括：具有傅立叶变换模块和模拟前端（AFE）的数字信号处理器（DSP）。 DSP确定用户线路上的可用频率范围，并通过减少或增加与每个音调集合的傅里叶变换相关联的处理间隔来相应地扩展或收缩固定数量“N”个音调中的每一个的音调间隔。 AFE以与傅里叶变换模块的处理间隔兼容的速率执行多音调调制通信信道的数模转换; 由此用户线路上的调制音调跨越的频率范围符合用户线上的可用频率。

公开(公告)号：US06937616B1

公开(公告)日：2005-08-30

申请号：US09620779

申请日：2000-07-21

申请人： Behrooz Rezvani ,  Sam Heidari ,  Avadhani Shridhar ,  Omprakash S. Samaru ,  Firooz Massoudi

发明人： Behrooz Rezvani ,  Sam Heidari ,  Avadhani Shridhar ,  Omprakash S. Samaru ,  Firooz Massoudi

IPC分类号： H04J3/22 ,  H04L12/28 ,  H04M11/06

CPC分类号： H04L12/2883 ,  H04L12/2856 ,  H04M11/062

摘要： A method and apparatus for digital subscriber line (xDSL) communications between one or more digital signal processors (DSPs) and analog front ends (AFEs) each coupled to corresponding subscriber line(s). The apparatus transports channels of data between subscribers and the DSP(s). The apparatus includes a bus for the transport of digital data, a DSP AFE interfaces. The DSP interfaces couples the DSP to the bus. The DSP interface accepts downstream channels of digital data from the DSP and transmits packets each associated with a corresponding one of the downstream channels to the bus. Each of the packets identifies a targeted AFEs coupled to a selected one of the subscriber lines. The AFE interfaces each couple an associated one of the AFEs to the bus. Each of the AFE interfaces transmits selected packets to a selected one of the subscriber lines for the transport to the subscriber.

摘要翻译： 一种用于一个或多个数字信号处理器（DSP）和模拟前端（AFE）之间的数字用户线（xDSL）通信的方法和装置，每个耦合到对应的用户线路。 该设备在订户和DSP之间传输数据信道。 该装置包括用于传输数字数据的总线，DSP AFE接口。 DSP接口将DSP耦合到总线。 DSP接口接收来自DSP的数字数据的下行信道，并且将与相应的一个下行信道相关联的分组发送到总线。 每个分组识别耦合到所选择的一个用户线路的目标AFE。 AFE接口将每个AFE接口中的一个耦合到总线。 每个AFE接口将所选择的分组传送到所选择的一个用户线，以便传输给用户。

公开(公告)号：US10931011B2

公开(公告)日：2021-02-23

申请号：US16785489

申请日：2020-02-07

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H01Q3/08 ,  H01Q3/26 ,  H01Q19/19 ,  H01Q21/28 ,  H04N21/61 ,  H01Q21/24 ,  H01Q25/00

摘要： An antenna system comprises an antenna module, a controller, and a processor. The antenna module is capable of adopting, at any time, any one of a plurality of polarities. The controller is capable of providing a time-varying control signal to the antenna module. At a specified time, the time-varying control signal directs the antenna module to adopt a specified polarity. The processor obtains, from the antenna module, at least one digital stream in response to an incident radio-frequency (RF) signal impinging on the antenna module. At the specified time, the at least one digital stream corresponds to the antenna module having adopted the specified polarity. The processor analyzes the at least one digital stream from the antenna module, and generates an output signal corresponding to the incident RF signal.

公开(公告)号：US08111790B2

公开(公告)日：2012-02-07

申请号：US12288569

申请日：2008-10-20

申请人： Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

发明人： Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

IPC分类号： H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC分类号： H04B17/345

摘要： A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.

摘要翻译： 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用值＆sgr; 2来表示估计的噪声和干扰功率，并且可以使用2来修改接收到的信号以改善噪声和干扰的影响。 ＆sgr; 2可以根据部分干扰进行调整，可以用公式表示：＆sgr; 2 =＆sgr; N2 + q＆sgr; I2，其中＆sgr; N2是“噪声功率”，＆sgr; I2是“干扰功率 ，“q是干扰校正因子。

公开(公告)号：US08064835B2

公开(公告)日：2011-11-22

申请号：US11653135

申请日：2007-01-11

申请人： Behrooz Rezvani ,  Andrea Goldsmith

发明人： Behrooz Rezvani ,  Andrea Goldsmith

IPC分类号： H04B15/00

CPC分类号： H04B7/0691 ,  H04B7/0874

摘要： This specification describes, in part, a technique for dynamic assignment of multiple antennas to different radio subsystems in a wireless device. The technique may include using an adaptive algorithm to allocate antennas to different radio subsystems as a function of, for example, application requirements, power requirements, and/or channel/network conditions. The specification also describes, in part, a technique for adaptively optimizing the use of the assigned antennas and other transmission parameters for each radio subsystem.

摘要翻译： 该规范部分地描述了用于在无线设备中将多个天线动态分配给不同无线电子系统的技术。 该技术可以包括使用自适应算法来根据例如应用需求，功率需求和/或信道/网络条件来将天线分配给不同的无线电子系统。 该规范还部分地描述了一种用于自适应地优化所分配的天线的使用和每个无线电子系统的其他传输参数的技术。

公开(公告)号：US07356049B1

公开(公告)日：2008-04-08

申请号：US10334623

申请日：2002-12-30

申请人： Behrooz Rezvani

发明人： Behrooz Rezvani

IPC分类号： H04J1/00 ,  H04L5/16

CPC分类号： H04L27/2608 ,  H04L1/0003

摘要： The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of multi-tone communications effected by opposing sets of modems coupled to one another by a plurality of subscriber lines is disclosed. The apparatus includes a spectrum manager coupled to at least one of the opposing sets of modems. The spectrum manager includes: a profiler, a demand module and an optimizer. The profiler obtains from the at least one of the opposing sets of modems the spectral characteristics of each of the plurality of subscriber lines. The demand module determines for each of the plurality of subscriber lines the subscriber demand profile. The optimizer defines target parameters for at least one of bit loading, and power spectral density (PSD) for selected tones of the multi-tone communications based on the spectral characteristics from the profile module and the demand profiles from the demand module and downloads the target parameters to the at least one of the opposing sets of modems.

摘要翻译： 本发明有利地提供了一种用于在彼此捆绑的用户线路中的诸如X-DSL的多线多音通信中的信道容量优化的方法和装置。 在本发明的一个实施例中，公开了一种用于优化由多个用户线路彼此耦合的相对的调制解调器集所影响的多音调通信的信道容量的装置。 该装置包括耦合到相对的一组调制解调器中的至少一个的频谱管理器。 频谱管理器包括：分析器，需求模块和优化器。 分析器从至少一个相对的调制解调器获得多个用户线中的每一个的频谱特性。 需求模块为多个用户线路中的每一个确定用户需求简档。 优化器基于来自简档模块的频谱特性和来自需求模块的需求简档来定义用于多音通信的所选音调的位加载和功率谱密度（PSD）中的至少一个的目标参数，并且下载目标 参数到至少一个相对的调制解调器组中。